Folding and gluing mechanism



Feb 25, i936. D. DANEKE Er A1.

Y FOLDING AND GLUING MECHANISM 3 Sheets-Sheet l Filed May 18, 1954 4INVENTORS d P/ fric/7 @ape/fe Le@ C l/V//hams ATTO`RNEY Y..l B

D. DANEKE Er AL FOLDING AND GLUING MECHANISM 3 VSheets-Sheet 2 Filed May18, 1934 l ATTORNEY Feb. 25, 1936. D. DANEKE Er AL FOLDING AND GLUINGMECHANISM Filed May 18, 1954 3 Sheets-Sheet 3 lllllllfllllll I l Ill IATTORN EY Patented Feb. 25, 1936 UNTED STATES FOLDING AND GLUINGMECHANISM Dietrich Daneke, Topeka, Kans., and Leo C. Williams, PearlRiver, N. Y., assignors to The Brackett Stripping Machine Company,Topeka, Kans., a oopartnership consisting of Edward IVI. Brackett andFred M. Brackett Application May 18, 1934, Serial No. 726,322

15 Claims.

This invention relates to a folding and gluing mechanism and has for itsprincipal objects to provide a mechanism of this character for foldingand gluing sheet papers, for folding sheet paper over the edge of a cardboard, and for producing single and double folds in card board fol'dersand similar articles.

In accomplishing these and other objects of the invention, we haveprovided improved dew tails of structure, the preferred form of which isillustrated in the accompanying drawings, where- 1n:

Fig. l is a perspective view of a folding and gluing machine constructedin accordance with the present invention.

Fig. 2 is a plan View of the machine.

Fig. 3 is a detail perspective View of a portion of the machineillustrating the folding of a paper sheet over the edge of a card board.

4 is a cross sectional view on the line 4 4,

Fig. 5 is a detail plan view of a wiping roller for drawing the foldededge of a sheet tightly over the edge of a card board.

Fig. 6 is a Vertical section through a portion of the machine on theline 6 6, Fig. 2.

Fig. 'l is a detail perspective View of one of the forming shoes.

Fig. 8 is a similar View of one of the folding shoes.

Fig. 9 is a sectional View through the folding shoes on the line 9 9,Fig. 12, showing the edge of1 a paper sheet being folded over theforming s oe.

Fig. 1) is a similar View on the line iB I, Fig. l2, showing the edge ofthe paper sheet after it has been moved to forming relation with theforming shoe by the folding shoe.

Fig. 1l is a similar view on the line I I I I, Fig.

l2, illustrating the completion of the fold.

Fig. 12 is a plan vierir of the machine as set up in making a doublefold in a card board folder or the like.

Fig. 13 is a cross section through the scoring rollers.

Fig. 14 is a detail sectional view through the forming and folding shoesproducing the second fold in a card board sheet.

Fig. 15 is a similar View showing the second fold in further foldingcondition.

Referring more in detail to the drawings:

I designates a machine embodying the features of the present inventionand which includes a table 2 having a dat substantially rectangularshaped top plate 3 supported at its ends on pairs of vertical l'egs 5and 6, 1, the table top being braced to the legs by suitable ties 8 and9 to form a substantially rigid structure.

6o Supported at one end of the table is a feeding shelf IB that issupported in the plane of the table tcp by braces II connecting theouter end of the shelf with the legs 4 and 5.

The shelf preferably includes a horizontal series of slats I2 extendingin the longitudinal 5 direction of the table and adapted to beinterarranged relatively to each other whereby a guide strip I3 on oneof the slats is adapted to be positioned relatively to a feeding headthat is carried by the table 3 later described. Carried 10 at the sidesof the shelf are work supporting wings I4 and i5 adapted to supportstacks of sheet material which are to be fed through the machine.

The feeding head is designated I6 and includes 15` upper and lowerconveyor belts il and I8. The lower conveyor belt I8 has its upper runI9 operating in a longitudinal slot 2D extending the length of the tabletop 2 and supported with its upper face in the plane of the table on aseries 20- of rollers 2|, the rollers 2l being mounted on pins 22 havingtheir ends supported in longitudinal flanges 23 and 24 depending fromthe side edges of the slot, as best shown in rg. 4. The lower run 25 ofthe upper belt Il is retained in sub- 25 stantial contact with the upperrun of the lower belt by a series of rollers 25 carried by the spacedlongitudinal bars 21 and 28 that are suspended over the table by meansof goose neck brackets 29 and 30. The rollers 26 are rotatably mounted30 on shafts 3| having their ends mounted in slots 32 of thelongitudinal bars 2l and 28 and are yieldingly urged against the beltsby spring pressed plungers 33 and 34 slidably mounted in bores 35 and 35in the bars and having ends 35 engaging in sockets 3l in the ends of theshafts.

The springs 38 are loosely supported in the bars and have one endengaging the tops of the plungers and their opposite ends engaging plugs39 threaded in the open upper ends of the bores 40 35 and 36.

The bars are connected near their ends by U- shaped brackets 49 in whichare rotatably mounted vertically positioned screw threaded shafts 4|that are threadedly supported in the horizontal 45 arms 42 of thebrackets 29 and 3G, the other arms of the brackets being secured to theside of the table by suitable fastening devices. Pressure of the rollersagainst the belts is regulated to compensate for Various thicknesses ofsheets passed 50 through the machine by rotating the shafts 4I to raiseand lower the side bars, the shafts 4I being operated by hand wheels 43.

Carried by a bar 44 between the brackets 29 and the adjacent ends of thelongitudinal bars is 55 a glue pot 45 having a glue applying wheel 46arranged so that its periphery moves through a slot 4l in the bottom ofthe glue pot for carrying the glue into contact with the work sheet fedthrough the machine, as later described. 'Ihe 60 glue applying wheel isxed to a shaft 48having its ends rotatably mounted in ydepending lugs 49on the glue pot and in a bearing 50 on a bracket 5| carrying the bar 44.

The outer end of the shaft carries a pulley 52 which is driven by a belt53 from a pulley 54 that is fixed to a shaft 55 at the opposite end ofthe machine as best illustrated in Fig. 1.

Carried by the side bar 28 and positioned thereon so as to operate onthe paper subsequent to the glue pot is a forming shoe 56 comprising anangle member having a vertical leg 51 attached to the side face of theside bar 28 and having a horizontal ange 58 extending outwardlytherefrom to form a longitudinal pressing foot for holding the work inposition on the table, as later described, the vertical flange of theangle member being secured to the side bar by headed screws 50 extendingthrough key hole slots 60 whereby the shoe may be readily removed fromthe machine by lifting the shoe until the enlarged portion 6| of the keyhole slots will rise over the heads of the fastening devices.

The forward end of the shoe is curved upwardly as at v62 to permit freeentrance of the work 'pieces thereunder as they are moved into foldingrelation with the folding shoe 63 that is positioned slightly in advanceof the forming shoe to effect folding of the work pieces as they aremoved through the machine.

The vfolding shoe 63 includes a flat longitudinal plate 64 havingtransverse slots 65 for adjustably mounting the plate relatively to theforming shoe. The shoe is secured to the flat top of the plate portion 3by headed fastening devices 66 having Shanks extendable through theslots 65 therein to clamp the plates against the table.

Formed along the edge of the folding shoe ad- Yjacent the forming shoeis an upwardly off-set and laterally extending folding flange 61 havingits forward end lying in the plane of the plate portion of the shoemember 56.

The rear end of the folding flange tapers outwardly and upwardlytherefrom to form a gradually rising substantially vertical foldingportion 10 supporting a horizontal triangular shaped pressing portion 1|adapted to overlie the upper face of the horizontal ange of the formingVshoe 56.

The forward end of the folding shoe has a downwardly curved nger 12positioned in an opening 13 in the table top so that as the work piecesvare fed along between the belts, the forward iedges thereof will rideup the downturned finger lso that the edge thereof rides onto the upperface of the folding shoe. As the work Apieces are advanced along theshoe, the folding ange gradually turns the edge thereof retractivelyover the upper face of a work piece or the Vhorizontal flange of theforming shoe depending upon 'the particular type of work being runthrough the machine.

When the type of work requires the folding of the work pieces o-ver acard and the folded edge yof the work piece to be drawn tightly againstthe card, the side bar is provided with a rotary wiping disk 14 havingits axis positioned at an inclined angle whereby the crowned lower facev15 of the disk engages the turned portion of the work at a single pointon its periphery so that lwhen the disk is rotated, the turned portionof the work will be drawn tightly over the card to rwhich it is beingattached.

'I'he Vshaft -of the drawing disk is rotatably mountedin a bearing 16extending laterally from the side of the longitudinal bar 28 and carriesa pulley 11 at its upper end that is retained by a wing nut 18 threadedon a projecting end of the shaft and engaging a hub of the pulley 11.

The pulley 11 is rotated from a pulley 18 fixed in driving relation withthe pulley 5e through an endless belt running over the respectivepulleys and over horizontally positioned pulleys carried on a bracket 8|that is fixed to the side of the table, as shown in Fig. 1.

Also secured on the longitudinal side bar 28 is a series of wipers 82,each comprising a flat spring 83 having one end engaging against the topof the table in the path of the work piece and having its other end xedto an eccentrically mounted hub 84 that is retained in adjusted positionon studs 85 projecting laterally from the outer face of the side bar.The hubs thus form cam like elements for variably tensioning thepressing end portions of the wipers to suit the particular work passedthrough the machine, the eccentric hub being retained in position by setscrews 85 threaded therein and engaging against the studs 05.

Pivotally mounted on the longitudinal side bar 28 intermediate thelength o-f the forming shoe are pressing members 81 and 88 havingforwardly extending end `portions 89 and 90 adapted to engage againstthe upper face of the work pieces between the folding and forming shoes,as sho-wn in Fig. 3.

The shaft carrying the pulleys 54 and 19 is rotatably mounted in abearing bracket 9| and also forms the driving connection with theendmost pulley 92 of the upper conveyor belt, as shown in Fig. 1.

The lower conveyor belt is driven by a shaft 93 that is. actuated intimed relation with the shaft 55 through gearing 94 in the housing 95,the gearing in turn being driven from a pulley 96 that is connectedthrough a driving belt 91 with the driving pulley 98 of a motor 99, asshown in Fig. 1.

Positioned at the delivery end of the table is a series of off-takebelts |00 mounted on rollers 0| and |02 carried by a table extension |03that has its outer end supported on legs |04 and |05.

Assuming that a machine constructed andassembled as described isemployed for securing the folded over edge of a sheet to the edge of acard board sheet, the operation is as follows:

A stack of the paper sheets is placed upon the work supporting wing I5and a stack of card boards on the opposite wing or on the unused portionof the shelf. The guide is then adjusted so that it engages one sideedge of the card board sheets while the other side moves in alignmentwith the glue applying wheel and a projecting edge of one of Athepapersheets moves in folding relation with the folding shoes. Theupperbelt'is then adjusted relatively to the lower belt to compensatefor the thickness of the work by manipulating the hand wheels 53 toraise or lower the belt, as best suited 'to the particular work at hand.

The machine is then started, after which one of the paper sheets A isplaced upon the slatted feeding table with a side edge thereof inguiding relation with the guide rail.

One of the card boards B is then placed over the sheet so that one edgethereof also engages the guiderrail and leaves an'exposed portion of thesheet along its opposite edge which is adapted to be `folded over theedge ofthe 'card board, as the superimposed card and sheet are adsheetsto edges of superimposed card board sheets vanced through the machine.

As the card board passes under the glue applying wheel, a strip of gluewill be applied thereto and when the projecting edge C of the sheet Arides over the downturned nger on the folded shoe, the edge of the sheetwill be lifted thereby onto the plate portion of the shoe. As the workmembers continue their advance along the table under propelling inuenceof the belts, the edge C of the sheet will move under the folding flangeso that it is bent thereby retractively over the glued portion of thecard board. While the projecting portion of the sheet is being turnedover the card board, the card board is retained flat against the tableby the depending ends of the pressing members 8l and 88.

After the fold has been formed and the forward ends of the card boardand paper sheets emerge from under the shoes, the bent over portion ofthe sheet is engaged by the rotary disk 14 which draws the folded overportion of the sheet in the direction of the belts so that it is drawntightly over the edge of the card board. As the work pieces continuetheir advance, the turned over portion of the sheet will move under thewiping arms 83 which press it into sealing engagement with the glue. Thebelts continue the advance of the work pieces to move them on theoff-take and delivery conveyor I 60 at the rear end of the machine.

If it is desired to simply turn back the edge of a sheet of paper, theglue pot may be moved laterally away from the path of travel of thesheet so that the exposed edge thereof is free to ride under thehorizontal flange of the forming shoe which retains it in flatcondition. In this instance, the projecting edge rides the folding shoeand is turned thereby over the forming shoe as shown in Figs. 9, 10 and11.- As the sheet emerges from under the shoes, it is engaged by thedisk to press the fold in tight contact with the body portion of thesheet; however, it may be desirable to lift the disk from contact withthe sheet so that the pressing is accomplished solely through the wipermembers.

When it is desired to produce double folds in a card board, the side bar28 is equipped with two sets of folding and forming shoes arrangedrelatively to each other so that the folds are made in the proper placein the sheets as they are set across the table.

To assist in making the folds, the table may be equipped at its forwardend with pairs of scoring disks iil, it?, and IEB, |09 that are fixed ona horizontal shaft rotatably mounted in bearings IID and I Il at thesides of the table and which is driven by a chain and sprocketconnection i l2 with a suitable driving shaft on the machine such as theshaft for driving the lower conveyor belt.

In order to guide the ends of the work pieces under the scoring rollers,the scoring rollers are provided with a shield H3 having its endssecured to the bearings mounting the score roller shaft as shown in Fig.12.

In case it is desired to make folds on both edges of the sheet, thetable top may be equipped with a second set of folding and forming shoessupported by the other longitudinal bar 21 as shown in Fig. 2 in linewith the point at which the fold is to be made on that side of the workpiece.

From the foregoing, it is apparent that we have provided a simple,relatively inexpensive machine which is adapted to fold and glue paperand by slight change of the machine the folding shoes may be used infolding card board folds and other articles requiring one or moreparallel folds.

What we claim and desire to secure by Letters Patent is:

1. In an apparatus of the character described, a support, conveyors formoving superimposed sheets along the support, means for mounting one ofthe conveyors on the support for movement to and from the other, meansfor applying glue in spaced relation to an edge of one of the sheets,means carried by the mounting means for pressing the sheets against thesupport, means bearing on the glued edge of the sheet to prevent curlingof said edge, and a folding shoe carried by the support for folding theedge of the other sheet over said glued portion of the first sheet.

2. In an apparatus of the character described, a support, means formoving superimposed sheets along the support, means for applying glue inspaced relation to an edge of one of the sheets, a shoe pressing thesheets against the support, means carried by the support for holding theglued edge of the sheet in sliding engagement with the support, afolding shoe carried by the support for folding the edge of the othersheet over said glued portion, and a wiping disk on the support fordrawing the folded edge of said other sheet tightly over the edge of theglued sheet.

3. In an apparatus of the character described, a support, means formoving superimposed sheets along the support, means for applying glue inspaced relation to an edge of one of the sheets, a shoe pressing thesheets against the support, pressing levers carried by the support andhaving ends engaging the glued portion of said sheet, a folding shoecarried by the support for folding the edge of the other sheet over saidglued portion, a wiping disk on the support for drawing the folded edgeof said other sheet tightly over the edge of the glued sheet, and aseries of wiping elements for yieldingly pressing the folded edge ofsaid other sheet in sealing contact with the glue.

4. In an apparatus of the character described, a support, a pair ofupper and lower conveyor belts for moving a sheet along the support,means for adjustably mounting the upper belt on the support for movementto and from the other belt, a forming shoe on said mounting means forengaging one side of the sheet, and a folding shoe carried by thesupport and having means for folding an edge of the sheet over theforming shoe while the sheet is being advanced by said conveyor belts.

5. In an apparatus of the character described, a support, cooperatingconveyors for clampingly engaging the outer sides of superimposed sheetsand for moving the sheets along the support, means mounting one of theconveyors to move said conveyor to and from the other conveyor meanscarried in the path of the sheet for applying glue to a selected portionof one of the sheets, an angle shaped forming shoe carried on saidmounting means and having a horizontal flange for engaging the uppersheet, a folding shoe carried by the support and having folding flangesfor folding an edge of the other sheet over the glued sheet to form afold, and means on the support for wiping the folded portion intosealing contact with the glue.

6. In an apparatus of the character described, a support, a xed conveyorbelt on the support,

vtact with the gglue.

spaced longitudinally extending bars adjustably ycarried on the support,a conveyor belt carried by .said bars and cooperating with the xed beltfor vmoving superimposed sheetsalong the support, means for applyingglue in spaced relation to an edge of one of the sheets, a Shoe carriedby one of the bars for pressing the sheets against the support, meanscarried by said support for holding the glued edge of the glued sheet insliding tengagement with the support, a folding shoe carried by thesuppo-rt for folding the edge of the other sheet over said gluedportion, and a wiping disk on said bar for drawing-the folded edge ofthe sheet-tightly over the edge of the glued sheet.

7. In an apparatus of the character described,

a support, a fixed conveyor belt on the support, spaced longitudinallyextending bars adjustably- .carried on the support, a conveyor beltcarried by said bars `and ycooperating withthe fixed belt for movingsuperimposed sheets along the support, means for applying glue in spacedrelation .to an edge of one of the sheets, a :shoe carried by one of thebars for pressing the sheets against the support, means carried by saidsupport for holding the glued edge of the glued sheet in slid- `ingengagement with the support, a folding shoe carried by the support foi`folding the edge of the other sheet over said glued portion, a wipingdisk on said bar for drawing the folded edge of the sheet tightly overthe edge of the glued sheet, anda series of wiping elements carried bysaid bar for pressing the folded edge in sealing con- 8. In an apparatusof the character described, a table, a shelf at one end of the table,means for moving a sheet from the shelf along the table, lmeans on thetable for forming a score in the sheet, a guide strip on the shelf forpositioning the sheet relatively to the score forming means, a formingshoe on the table in alignment with the score, and a folding shoe forbending the Ysheet on the score line over the forming shoe to form afold in the sheet.

9. In a machine of the character described, a table, a shelf at one endof the table, means carried by the table for forming a plurality oflongitudinal score lines in a sheet, a guide strip on the shelf forpositioning the sheet relatively to the score forming means, means formoving the sheet along the table to produce said scores,

. forming shoes on the table aligning with the respective score lines,and folding shoes cooperating with the forming shoes to fold the sheeton said scores.

10. In an apparatus-of the character described, a table, a shelf at oneend of the table, means for moving sheets from the shelf along thetable, means for applying glue in spaced relation to an edge of one ofthe sheets, a guide strip on the shelf for aligning the sheetsrelatively to the glue applying means, a shoe pressing the sheet against=the table, means carried by the table for holding the glued edge ofsaid sheet in sliding engagement with the table, a folding shoe carriedby the table for folding the edge of the other sheet over said gluedportion, a Vwiping disk on the table for drawing the folded vedge Yofsaid other sheet tightly over the edge of the glued sheet, and a seriesof wiping elements for pressing the lfolded edge in sealing contact Withthe glue.

111. In an apparatus of the character described, a support, a fixedconveyor belt on the support, spaced longitudinally extending barsadjustably y.carried onthe support, a conveyor belt 'carried by saidbars and cooperating Vwith the fixed .belt for moving superimposedsheets along Vthe sup# port, .means for applying glue in spaced relationdisk on said bar 4for drawing the folded edge ofA the sheet tightly overthe edge of the glued sheet, a forming means carried by the other bar,and a folding means cooperating with said forming means to fold theopposite edge of one of the sheets.

l2. In an apparatus of the character described, a support, a fixedconveyor belt on the support, spaced bars adjustably carried on thesupport, a conveyor belt carried by said bars and cooperating with thefixed conveyor belt for moving superimposed sheets along the support,means for applying glue in spaced relation to an edge of one of thesheets, a shoe carried by one of the bars ,for pressing the sheetsagainst the support, means for holding the glued edge of the glued sheetin sliding engagement with the support, a. folding shoe carried by thesupport for folding the edge of the other sheet over said glued portion,form- -ing means carried by the other bar, and a folding meanscooperating with said forming means to fold the opposite edge of one ofthe sheets.

13. In an apparatus of the character described, a support, conveyormeans on the support, spaced bars adjustably carried on the support, aconi"' veyor means carried by said bars and cooperating with the firstconveyor means for moving superimposed sheets along the support, meansfor applying rglue in spaced relation to an edge of one of the sheets, ashoe carried by one of the bars forl pressing the sheets against thesupport, a folding shoe carried by the support for folding the edge ofthe other sheet over said glued portion, forming means carried by the.other bar,

and a folding means cooperating with said forming means to fold theopposite edge of one of the sheets.

14. In an apparatus of the character described,

`a support, conveyor means on the support, spaced bars adjustablycarried on the support, aconveyor 'f shoe carried by the support forfolding an edge f 4of one of the sheets, forming means carried by theother bar, and a folding means cooperating with said .forming means tofold the opposite -edgeof oneof the sheets.

15. In an apparatus of the character described, a support, conveyorbelts having runs for clampingly engaging the respective sides of asheet and for moving the sheet along the support, means mounting one ofthe conveyor Vbelts for movement to and from the otherto vary saidclamping engagement, means carried by said mounting means and movable inconformity to the conveyor belt for pressing the sheet against thesupport, and a folding means carried by the support and kcooperatingwith the pressing means for folding an edge of the sheet back uponitself.

DIETRICH DANEKE. LEO C. WILLIAMS.

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